CN105710401A - Special cutter bar for boring inner annular grooves of deep-long holes - Google Patents
Special cutter bar for boring inner annular grooves of deep-long holes Download PDFInfo
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- CN105710401A CN105710401A CN201610273425.9A CN201610273425A CN105710401A CN 105710401 A CN105710401 A CN 105710401A CN 201610273425 A CN201610273425 A CN 201610273425A CN 105710401 A CN105710401 A CN 105710401A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/02—Boring bars
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Abstract
The invention discloses a special segmented boring bar with double guide support and used for boring machining for inner annular grooves of deep holes. The boring bar comprises a guide part, a cutter bit part, a cutter advancing-retreating control part, an axial location part, an auxiliary support part and a bar body part, wherein a guide head is connected with the front end of a sleeve by virtue of dowels, the auxiliary support part is connected with the sleeve by virtue of spherical screws, and due to the combination of the guide head and auxiliary support blocks, the partial static rigidity of the cutter bit can be greatly improved; a front baffle is connected with the front end of the guide head by virtue of a screw, and a rear baffle is connected with the rear end of the sleeve by virtue of a screw; and three uniformly-arranged blades are arranged in the peripheral direction of the cutter bit part, and capable of counteracting a radial force and a tangential force during cutting, and further improving the rigidity of the cutter bar. The special segmented boring bar with double guide support, which is disclosed by the invention, is applicable to boring machining for inner annular grooves of deep holes with large length-diameter ratios and multilayer deep holes; and compared with a boring bar in the prior art, the machining range is wider, and the machining surface quality and machining accuracy are remarkably improved.
Description
Technical field
The invention belongs to deep hole inside groove manufacture field, particularly a kind of deep and long hole annular trough boring special holder.
Background technology
In Machining Technology, deep hole annular trough realizes mainly by boring processing.But in the process of boring deep hole inside groove, boring bar is in overhanging state, when not adding guide support, cutter head place is unfettered, and cutting force is easy to make boring bar be deformed, and the physical dimension of knife bar is subject to the restriction in workpiece aperture, major diameter relatively larger (being generally higher than 15), therefore the rigidity of boring bar is more weak, it is easy to cause cutter relieving, machining accuracy it is difficult to ensure that.And in deep hole boring process, cutting force mostly is uneven, the boring bar dynamic stiffness for boring is poor, and tool wear is serious, and working (machining) efficiency is also difficult to be guaranteed.
In order to reduce the stress deformation of boring bar, solution general at present has two kinds: one to be the physical dimension changing boring bar, as reduced boring bar cantilevered length, increases the diameter of boring bar.If processing object is the deep and long hole that aperture is less, the method is infeasible；One is the material changing boring bar, selects the material (such as hard alloy, pottery etc.) of some high elastic modulus to make knife bar.But this type of materials processing is comparatively difficult, and toughness is poor, it is easy to brittle failure occurs, and the material therefore only changing boring bar also has certain limitation.
Application number is 20120069750.5, Chinese patent and the application number of " deep hole processing cutter " by name are 201010612194.2, the Chinese patent of by name " deep hole drilling apparatus " all discloses a kind of deep-hole boring-scrape-roll combination deep hole processing cutter, there is the expansion mechanism for surface forming, and two inventions are provided with gib block and force transfer key respectively in scraping portion, knife bar rigidity obtains and is effectively improved, and substantially improves the processing conditions of deep and long hole boring.But the radial dimension of this compound tool is bigger, it is impossible to the deep and long hole that processing aperture is less.And heavy boring portion and rolling portion radial dimension are fixed, and are only used for the boring of inner walls of deep holes, it is impossible to realizing the boring processing of multilamellar deep hole annular trough, processing object is comparatively single.And cutter is also not provided with corresponding chip discharging structure, chip easily scratches finished surface, also can aggravate tool wear simultaneously, affect cutter life.
The paper of a section of the Zhang Yanting of heavy-duty engine lathe institute by name " novel grooving lever structure and application " describes a kind of efficient suitable in box body hole processing, high accuracy necking cutter holder, this cutter rely on the angled-lift splits on knife bar and the oblique slot on blade radially with anti-radial structure, feed and withdrawing can be controlled reliably, but this knife bar only one of which blade, cutting radial force and tangential force cannot be offset, and there is no corresponding guide support structure, knife bar rigidity is poor, in addition, to processing multi-layer annular groove, adjusting nut must be relied on to realize axial location control, operate relatively complicated, and axial dimension precision is poor, and lack corresponding chip discharging structure, chip is easily blocked in cutter head position, have a strong impact on machined surface quality and cutter life.
The paper of a section of Lv Xiaobin " the practical machining tool design of hole slot " by name describes a kind of dedicated tool being applicable to process the workpiece having inside groove with porous and every Kong Jun, guide rail is relied on to realize radial feed with the constraint mutually of skewed slot on blade, but owing to the axial location of positioning sleeve is fixed, to processing multi-layer annular groove, blade row structure then must be adopted to process multiple inside groove simultaneously, cutting force is relatively larger, and this cutter is provided only with unilateral guide rail, and guide rail cross sectional moment of inertia is less, stress deformation is relatively big, is easily caused cutter relieving.And cutter does not add corresponding guiding and supports, and knife bar integral rigidity is more weak, is unsuitable for the processing of deep hole multi-layer annular inside groove.
From the foregoing, it will be observed that in deep hole inside groove manufacture field, existing technology knife bar rigidity is more weak, it is poor that axial location controls motility, and processing multi-layer annular groove is comparatively difficult, and compound tool radial dimension is relatively big, is unsuitable for the deep and long hole processing that aperture is less.And majority knife bar lacks corresponding chip discharging structure, chip easily scratches finished surface, affects cutter life, and working (machining) efficiency is difficult to ensure that.
Summary of the invention
Technical problem solved by the invention is in that to provide the stagewise deep hole annular trough boring dedicated boring rod of a kind of tape guide dual-gripper.
The technical solution realizing the object of the invention is: a kind of deep and long hole annular trough boring special holder, and it includes front apron, thrust bearing, thrust bearing, guide head, cutting fluid pipe, blade, jacking block, support bearing shell, front core bar, rear core bar, sleeve, splined shaft, backboard, hex screw, guide pad, rubber blanket, straight pin, bracer, sphere screw, the first connecting pin, the second connecting pin, sunk screw；
The rear end of described front apron arranges guide head, guide head circumference uniformly has 3 dovetail grooves, each dovetail groove is equipped with guide pad, each guide pad bottom surface axially has 2 blind holes, each blind hole is equipped with rubber blanket, one end of rubber blanket contacts with blind hole bottom surface, the other end of rubber blanket contacts with the bottom surface of dovetail groove, guide head is provided with cutting fluid pipe with the centrosymmetric position of dovetail groove, the front end of sleeve and guide head are fixedly connected with, rear end and backboard are fixedly connected with, front core bar it is provided with in sleeve, rear core bar and splined shaft, the front end of front core bar is cased with thrust bearing, the other end of front core bar and rear core bar are fixedly connected with, the middle part of front core bar arranges jacking block, jacking block circumference is uniformly equipped with 3 blades, the back segment of front core bar passive 3 support bearing shells uniform with circumference contact, the end of rear core bar and splined shaft are fixedly connected with, splined shaft is cased with thrust bearing in the junction with rear core bar.
The present invention is compared with prior art, its remarkable advantage is: the boring bar of (1) present invention is provided with oblique dovetail groove on blade, being provided with oblique dovetail slideway on jacking block, both cooperatively form has radially and anti-track structure radially, can realize radial feed and the withdrawing of cutter reliably.(2) three blade symmetry distributions of tool bit part, radial force and tangential force are cancelled out each other, and substantially increase knife bar rigidity, and knife bar can bear bigger cutting force.Also can reduce the deviation from cylindrical form that workpiece produces due to stress deformation simultaneously.And three blades cut simultaneously, working (machining) efficiency also effectively improves.(3) guide pad and a bracer outer surface are matched in clearance with inner hole of workpiece, form two strong points, the Flexural cantilever model of common boring bar can be become the simply supported beam model that span is less, further increase the local stiffness at cutter head place, decrease cutter stress deformation, and then improve machining accuracy.(4) guide pad has certain gap with the dovetail groove bottom surface on guide head, it is provided with two rubber blankets of axial distribution between the two, rely on the elastic reaction of rubber blanket, the guide pad radial position corresponding to boring bar can be automatically adjusted according to the size in aperture, avoid stuck phenomenon, simultaneously because the damping of rubber is bigger, it is possible to play certain damping effect.(5) after jacking block moves to certain position, it is possible to splined shaft is locked, the radial position of blade remains unchanged, now boring bar entirety axial feed, it is possible to achieve the boring processing of deep and long hole, substantially increases the motility of processing.(6) boring bar radial dimension is less, than existing technology, it is possible to boring is small-bore deep hole inside groove more, and the range of work is wider.(7) shank portion is segmentation structure, and processing technology easily realizes, and rear core bar adopts the 3Cr2W8V material that elastic modelling quantity is bigger, can further improve the integral rigidity of knife bar.(8), after single annular trough machines, splined shaft reverses, after cutter radial withdrawing, boring bar entirety can rely on lathe cutter saddle axial feed, and after reaching next Working position, splined shaft rotates forward, just can realizing the processing of multi-layer annular inside groove, operation is comparatively flexible, and axial dimension precision is easily controlled.(9) boring bar of the present invention is provided with rational chip discharging structure, it is to avoid chip is blocked in cutter head position, and processing conditions improves.
Accompanying drawing explanation
Fig. 1 is the vertical profile structural representation of boring bar of the present invention.
Fig. 2 is the partial enlarged drawing at Fig. 1 guide pad place.
Fig. 3 is the plan structure schematic diagram of boring bar of the present invention.
Fig. 4 is the sectional view of the line A-A along Fig. 1.
Fig. 5 is the sectional view of the line B-B along Fig. 1.
Fig. 6 is the sectional view of the line C-C along Fig. 1.
Fig. 7 is the top view of front apron.
Fig. 8 is the top view of backboard.
Fig. 9 is the top view of guide head.
Figure 10 is the left view structural representation (office is cutd open) of guide head.
Figure 11 is the main TV structure schematic diagram of jacking block.
Figure 12 is the sectional view of jacking block.
Figure 13 is the top view of jacking block.
Figure 14 is the front view of blade.
Figure 15 is the left view of blade.
Figure 16 is the main TV structure schematic diagram of sleeve.
Figure 17 is the sectional view of the line D-D along Figure 16.
Figure 18 is the sectional view of the E-E line along Figure 16.
Number in the figure implication is as follows: 1-front apron；2-1-thrust bearing；2-2-thrust bearing；3-guide head；4-cutting fluid pipe；5-blade；6-jacking block；7-supports bearing shell；Core bar before 8-；Core bar after 9-；10-sleeve；11-splined shaft；12-backboard；13-hex screw；14-guide pad；15-rubber blanket；16-straight pin；17-props up bracer；18-sphere screw；19-1-the first connecting pin；19-2-the second connecting pin；20-sunk screw.
Detailed description of the invention
In conjunction with Fig. 1, a kind of deep and long hole annular trough boring special holder of the present invention, including front apron 1, thrust bearing 2-1, thrust bearing 2-2, guide head 3, cutting fluid pipe 4, blade 5, jacking block 6, supports bearing shell 7, front core bar 8, rear core bar 9, sleeve 10, splined shaft 11, backboard 12, hex screw 13, guide pad 14, rubber blanket 15, straight pin 16, bracer 17, sphere screw the 18, first connecting pin 19-1, the second connecting pin 19-2, sunk screw 20；
The rear end of described front apron 1 arranges guide head 3, guide head 3 circumference uniformly has 3 dovetail grooves, each dovetail groove is equipped with guide pad 14, each guide pad 14 bottom surface axially has 2 blind holes, each blind hole is equipped with rubber blanket 15, one end of rubber blanket 15 contacts with blind hole bottom surface, the other end of rubber blanket 15 contacts with the bottom surface of dovetail groove, guide head 3 is provided with cutting fluid pipe 4 with the centrosymmetric position of dovetail groove, the front end of sleeve 10 and guide head 3 are fixedly connected with, rear end and backboard 12 are fixedly connected with, front core bar 8 it is provided with in sleeve 10, rear core bar 9 and splined shaft 11, the front end of front core bar 8 is cased with thrust bearing 2-1, the other end of front core bar 8 and rear core bar 9 are fixedly connected with, the middle part of front core bar 8 arranges jacking block 6, jacking block 6 circumference is uniformly equipped with 3 blades 5, passive 3 support bearing shells 7 that the back segment of front core bar 8 is uniform with circumference contact, the end of rear core bar 9 and splined shaft 11 are fixedly connected with, splined shaft 11 is cased with thrust bearing 2-2 in the junction with rear core bar 9.
The sidewall circumference of described sleeve 10 uniformly has 3 screwed holes, sleeve 10 outer wall upper screwed hole place has the groove for installing a bracer 17, sphere screw 18 is installed in this screwed hole, the bulb of sphere screw 18 is inwardly, this sphere screw 18 is threadeded with a bracer 17 simultaneously, and the bulb of sphere screw 18 is nested in the ball-type groove supporting bearing shell 7.
Described sleeve 10 circumference uniformly has 3 axial pass troughs for playing chip removal effect in working angles.
It is connected by hex screw 13 between described front apron 1 and guide head 3, it is connected by straight pin 16 between sleeve 10 and guide head 3, it is connected by sunk screw 20 between backboard 12 and sleeve 10, front core bar 8 is connected by the first connecting pin 19-1 with rear core bar 9, and rear core bar 9 is connected by the second connecting pin 19-2 with splined shaft 11.
It is threaded engagement between described front core bar 8 and jacking block 6.
The end of described splined shaft 11 is milled with the involute spline for transmitting moment of torsion.
On described jacking block 6, circumference is uniformly milled with 3 oblique dovetail slideways, and gradient is 14 °, and blade 5 is milled with oblique dovetail groove, and gradient is 14 °, matches with jacking block 6.
Described guide pad 14 and a bracer 17 are 16Mn material, and supporting bearing shell 7 is ZCuSn10P1 material, and rear core bar 9 is 3Cr2W8V material, and sphere screw 18 is 45 Steel materials and the modified rear high-frequency quenching of land portions.
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment
Being the vertical profile structural representation of the stagewise deep hole annular trough boring dedicated boring rod of the tape guide dual-gripper of the present invention such as Fig. 1, it is primarily adapted for use in the boring processing of the less deep and long hole of diameter and deep and long hole annular trough.The draw ratio of boring bar is 17:1, and knife bar main diameter is 21mm.Boring bar is made up of targeting part, tool bit part, cutter advance and retreat control part, axial position portion, auxiliary supporting part and shank portion.Targeting part and auxiliary supporting part are that tool bit part provides a supporting role, and reduce the stress deformation at cutter head place.Rear core bar in shank portion adopts the material manufacture of high elastic modulus, can further improve the integral rigidity of knife bar.Tool bit part is provided with three evenly distributed blades, and major part cutting force is cancelled out each other, and can effectively suppress the cutter relieving at cutter head place, and therefore boring bar of the present invention can process the deep hole of relatively big L/D ratio.
The targeting part guide head 3 shown in front apron 1, Fig. 9 as shown in Figure 7, guide pad 14 and rubber blanket 15 form.Guide head 3 adopts good 45 Steel materials of combination property, circumference uniformly has three swallow-tail form grooves, what rely on dovetail groove orifice tightens up function to guide pad 14 radially location, guide head end symmetrical is provided with three projections, can be used for the axial location of blade 5, on guide head 3, the centrosymmetric position of dovetail groove has through hole, for installing cutting fluid pipe 4, in Boring Process, cutting fluid rushes at cutter head, it is possible to cooling cutter head can rush at the chip area on sleeve 10 chip again, when dry cutting, pass into gases at high pressure from cutting fluid pipe 4, also can play the effect of timely chip removal.Front apron 1 adopts 45 Steel materials equally, relies on 3 uniform hex screws 13 of circumference to be connected with guide head 3, for the axial location of guide pad 14.Guide pad 14 adopts the good 16Mn material of wearability, and outer surface is circular arc, is nominal equivalently-sized matched in clearance with deep hole inner surface on workpiece, plays certain support and guide effect.Before deep and long hole boring processing, axially pore size there may be certain deviation everywhere, as shown in Figure 2, the lower surface of guide pad 14 and dovetail groove bottom surface have a small amount of gap, axially it is uniformly provided with two rubber blankets 15 between the two, rely on the elastic reaction of rubber, the radial dimension of targeting part can be automatically adjusted according to pore size, it is to avoid stuck phenomenon occurs.It addition, guide pad 14, the friction of rubber blanket 15 and guide pad and dovetail groove inwall can form double freedom spring-damp system, effectively reduces the vibration at cutter head place in deep and long hole inside groove Boring Process.
As shown in Figure 6, auxiliary supporting part is by supporting bearing shell 7, and a bracer 17, sphere screw 18 forms.Support the acid bronze alloy ZCuSn10P1 that bearing shell 7 adopts wearability good, inner surface is the matched in clearance that nominal size is identical with front core bar 8, outer surface is identical with sleeve 10 hole size, supporting bearing shell width-diameter ratio is 0.8, single support bearing shell to central angle be 90 °, outer surface centre is milled with ball recess, and groove diameter is identical with the land portions of sphere screw 18.Sphere screw 18 adopts 45 Steel materials, high-frequency quenching after land portions modulation, cylindrical part car has screw thread, screw thread is relied on to be connected with sleeve 10, in the boring course of processing, the land portions of sphere screw 18 matches with the spherical groove supported on bearing shell 7, for supporting the circumferentially positioned of bearing shell 7 in front core bar 8 rotation process, also functions to the effect radially supported simultaneously.Prop up bracer 17 and adopt 16Mn material, length is longer, for 16mm, can avoiding being stuck in the groove processed during axial feed, bracer 17 centre is provided with screwed hole, threaded with sphere screw 18, outer surface and the matched in clearance that inner hole of workpiece is that nominal size is identical, cooperatively form, with guide pad 14, the simply supported beam model that span is less, can effectively improve local, cutter head place Static stiffness, reduce its stress deformation, improve machining accuracy.
Cutter is retreated and is controlled part by jacking block 6, and front core bar 8, sleeve 10 forms.Jacking block 6 adopts 45 Steel materials, such as Figure 11, and 12, shown in 13, on its taper surface, circumference is uniformly milled with three oblique dovetail slideways, and gradient is 14 °, with the oblique dove-tail on blade 5 radially and anti-track structure radially, it is possible to realize the automatic harmomegathus function of cutter reliably.Jacking block 6 center has screwed hole, forms, with front core bar 8, the screw thread pair that jacking block is travelling.The displacement of the radial displacement of blade 5 and jacking block 6 meets following equation:
H=Ltan θ
H in formula: the radial displacement of blade
L: the axial displacement of jacking block 6
θ: the dovetail groove gradient of jacking block 6
The rotating speed of the axial displacement of jacking block 6 and front core bar 8 meets following equation:
L=P × n × t
P in formula: the pitch of thread segment
N: the rotating speed of front core bar 8
T: the time that front core bar 8 rotates
Thus can draw the radial displacement of blade 5 and the relation of front core bar 8 rotation time:
H=P × n × t × tan θ
In Boring Process, front core bar 8 rotates forward, blade 5 radial feed, after single inside groove machines, front core bar 8 reverses, blade 5 is withdrawing radially, lathe cutter saddle drives boring cutter bar to move axially to the position of next inside groove to be processed, and front core bar 8 rotates forward, it may be achieved the boring processing of multi-layer annular groove, operating more convenient, axial dimension precision is higher.
When blade 5 extends radially out certain position, locked splined shaft 11, boring cutter bar entirety axial feed, just can realize the boring processing of deep and long hole inwall, improve the motility of processing to a certain extent.
Front core bar 8 is multidiameter, and middle vehicle has screw thread, and rear end relies on connecting pin 19-1 to be connected with rear core bar 9, and after dependence, core bar 9 transmits driving force and axially positions.As shown in Figure 1, the necked part of front core bar 8 and the end face inner bore of guide head 3 are the matched in clearance that name is equivalently-sized, thread segment aft section is nominal equivalently-sized matched in clearance with supporting bearing shell 7, because core bar 8 is free to rotate before this, and a part of cutting force can be delivered to again guide pad 14 and a bracer 17, improve the rigidity of knife bar.Sleeve 10 is through-hole structure, three uniform straight pins 16 of circumference are relied on to be connected with guide head 3, sleeve 10 adopts 45 Steel materials that processing characteristics is comparatively good, barrel forward end uniformly has three end face straight troughs, during assembling in three of guide head 3 protruding corresponding these straight troughs of insertion, can rely on the end face of projection and the bottom surface of straight trough that blade 5 is axially positioned.Chip area axially it is milled with, for the chip removal in the boring course of processing in the corresponding position of sleeve 10 upper surface straight trough.As shown in Figure 6, sleeve 10 relies on sphere screw threadeds, and symmetry is milled with 3 grooves radially above in junction, for installing a bracer 17.
Tool bit part is made up of equally distributed three blades 5 of circumference, and as shown in Figure 14 and Figure 15, blade 5 matrix adopts 45 Steel materials, machining part inlay is on blade base, adopt the PCD material manufacture that hardness is higher, it is possible to reduce tool wear, improve machined surface quality.Three blades 5 are symmetrical, the radial force in the course of processing and tangential force can be offset, knife bar is limited only by responsive to axial force, cutter head place cutter relieving phenomenon can be prevented effectively from, and owing to boring bar diameter is less, the moment of torsion that tangential force is added is also less, and therefore boring bar can bear bigger cutting force, has higher Static stiffness.Three blades 5 are symmetrical, and each two blade angle is 120 °, can reduce the deviation from cylindrical form that workpiece produces due to stress deformation, and three blades simultaneously participate in cutting, and working (machining) efficiency have also been obtained certain raising.
Axial position portion is by thrust bearing 2-1, thrust bearing 2-2, backboard 12, guide head 3 forms, and as shown in Figure 8, backboard 12 adopts 45 Steel materials, it is connected with sleeve 10 by sunk screw 20, on backboard 12, the chip area position of corresponding sleeve 10 has three grooves, and size is identical with chip area, the discharge being beneficial in the course of processing chip.As shown in Figure 1, thrust bearing 2-2 and backboard 12 against, axial location for rear core bar 10, the endoporus bottom surface of thrust bearing 2-1 and guide head larger interior diameter against, axial location for front core bar 8, and front core bar 8 and rear core bar 10 are fixedly connected with by the first connecting pin 18-1, therefore axially position portion can ensure that the axial location of front core bar 8 is fixed, and forms, with jacking block 6, the structure being similar to screw pair.
Shank portion is made up of rear core bar 9 and splined shaft 11, and rear core bar 9 adopts the 3Cr2W8V material of higher elasticity modulus and higher modulus of rigidity, and diameter is identical with the internal diameter of sleeve 10, can further improve the integral rigidity of boring bar.Splined shaft 11 adopts 45 Steel materials, and front end is fixedly connected with rear core bar 9 by the second connecting pin 19-2, and rear end is milled with the involute spline that length is 15mm, self-centering action can be played during involute spline transmission moment of torsion, each tooth uniform force, bearing capacity is good, is effectively increased the life-span of knife bar.
As from the foregoing, the tape guide dual-gripper stagewise dedicated boring rod of the present invention, it is adaptable to deep hole and the boring of multilamellar deep hole interior annular groove that major diameter is relatively larger are processed, boring bar compared to prior art, the range of work is wider, and machined surface quality and machining accuracy are significantly improved.
Claims (8)
1. a deep and long hole annular trough boring special holder, it is characterized in that, including front apron [1], thrust bearing [2-1], thrust bearing [2-2], guide head [3], cutting fluid pipe [4], blade [5], jacking block [6], support bearing shell [7], front core bar [8], rear core bar [9], sleeve [10], splined shaft [11], backboard [12], hex screw [13], guide pad [14], rubber blanket [15], straight pin [16], prop up bracer [17], sphere screw [18], first connecting pin [19-1], second connecting pin [19-2], sunk screw [20]；
The rear end of described front apron [1] arranges guide head [3], guide head [3] circumference uniformly has 3 dovetail grooves, each dovetail groove is equipped with guide pad [14], each guide pad [14] bottom surface axially has 2 blind holes, each blind hole is equipped with rubber blanket [15], one end of rubber blanket [15] contacts with blind hole bottom surface, the other end of rubber blanket [15] contacts with the bottom surface of dovetail groove, and dovetail groove centrosymmetric position upper at guide head [3] is provided with cutting fluid pipe [4], the front end of sleeve [10] and guide head [3] are fixedly connected with, rear end and backboard [12] are fixedly connected with, front core bar [8] it is provided with in sleeve [10], rear core bar [9] and splined shaft [11], the front end of front core bar [8] is cased with thrust bearing [2-1], the other end of front core bar [8] and rear core bar [9] are fixedly connected with, the middle part of front core bar [8] arranges jacking block [6], jacking block [6] circumference is uniformly equipped with 3 blades [5], passive 3 support bearing shells [7] that the back segment of front core bar [8] is uniform with circumference contact, the end of rear core bar [9] and splined shaft [11] are fixedly connected with, splined shaft [11] is cased with thrust bearing [2-2] in the junction with rear core bar [9].
2. deep and long hole annular trough boring special holder according to claim 1, it is characterized in that, the sidewall circumference of sleeve [10] uniformly has 3 screwed holes, sleeve [10] outer wall upper screwed hole place has the groove for installing a bracer [17], sphere screw [18] is installed in this screwed hole, the bulb of sphere screw [18] is inwardly, this sphere screw [18] is threadeded with a bracer [17] simultaneously, and the bulb of sphere screw [18] is nested in the ball-type groove supporting bearing shell [7].
3. deep and long hole annular trough boring special holder according to claim 1, it is characterised in that sleeve [10] circumference uniformly has 3 axial pass troughs for playing chip removal effect in working angles.
4. deep and long hole annular trough boring special holder according to claim 1, it is characterized in that, it is connected by hex screw [13] between front apron [1] and guide head [3], it is connected by straight pin [16] between sleeve [10] and guide head [3], it is connected by sunk screw [20] between backboard [12] and sleeve [10], front core bar [8] is connected by the first connecting pin [19-1] with rear core bar [9], rear core bar [9] is connected by the second connecting pin [19-2] with splined shaft [11].
5. deep and long hole annular trough boring special holder according to claim 1, it is characterised in that be threaded engagement between front core bar [8] and jacking block [6].
6. deep and long hole annular trough boring special holder according to claim 1, it is characterised in that the end of splined shaft [11] is milled with the involute spline for transmitting moment of torsion.
7. deep and long hole annular trough boring special holder according to claim 1, it is characterised in that the upper circumference of jacking block [6] is uniformly milled with 3 oblique dovetail slideways, gradient is 14 °, blade is milled with oblique dovetail groove on [5], and gradient is 14 °, matches with jacking block [6].
8. deep and long hole annular trough boring special holder according to claim 1, it is characterized in that, guide pad [14] and a bracer [17] are 16Mn material, supporting bearing shell [7] is ZCuSn10P1 material, rear core bar [9] is 3Cr2W8V material, and sphere screw [18] is 45 Steel materials and the modified rear high-frequency quenching of land portions.
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| CN108672764A (en) * | 2018-07-16 | 2018-10-19 | 河南理工大学 | The adaptive brace type borer of the processing abdomen formula deep hole of cutter expandable |
| CN109692981A (en) * | 2019-03-04 | 2019-04-30 | 李吴军 | A kind of Counterboring apparatus of machine workpieces blind hole |
| CN109848453A (en) * | 2019-02-18 | 2019-06-07 | 宝鸡同盈稀有金属有限公司 | A kind of lever structure and the target method for machining bore using the lever structure |
| CN109940183A (en) * | 2019-04-12 | 2019-06-28 | 德阳万源旭鸿机电科技发展有限公司 | A kind of high-strength composite vibration damping knife bar |
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| GB701188A (en) * | 1952-01-04 | 1953-12-16 | Samuel Osborn & Company Ltd | Improved reamer or boring bar |
| SU673437A1 (en) * | 1977-03-01 | 1979-07-15 | Предприятие П/Я М-5921 | Combined tool for simultaneous boring and rolling-out of a bore |
| CN200951469Y (en) * | 2006-10-19 | 2007-09-26 | 武裕 | Boring roller head |
| CN101607320A (en) * | 2008-06-20 | 2009-12-23 | 周惟国 | Hydraulic anti-vibration boring bar and attachment device |
| CN102101240A (en) * | 2010-12-30 | 2011-06-22 | 德州普利森机床有限公司 | Device for processing longhole |
| CN102581617A (en) * | 2012-03-16 | 2012-07-18 | 德州普利森机床有限公司 | Deep hole machining cutter |
| CN102717121A (en) * | 2012-06-25 | 2012-10-10 | 中北大学 | Deep hole machine tool suitable for tapered deep hole boring |
| CN202591649U (en) * | 2012-04-16 | 2012-12-12 | 上海东方泵业(集团)有限公司 | Vibration damping boring bar |
| CN103934487A (en) * | 2014-04-23 | 2014-07-23 | 哈尔滨汽轮机厂有限责任公司 | Boring tool used for machining deep holes of turbine sleeves and deep hole machining method |
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2016
- 2016-04-28 CN CN201610273425.9A patent/CN105710401B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB701188A (en) * | 1952-01-04 | 1953-12-16 | Samuel Osborn & Company Ltd | Improved reamer or boring bar |
| SU673437A1 (en) * | 1977-03-01 | 1979-07-15 | Предприятие П/Я М-5921 | Combined tool for simultaneous boring and rolling-out of a bore |
| CN200951469Y (en) * | 2006-10-19 | 2007-09-26 | 武裕 | Boring roller head |
| CN101607320A (en) * | 2008-06-20 | 2009-12-23 | 周惟国 | Hydraulic anti-vibration boring bar and attachment device |
| CN102101240A (en) * | 2010-12-30 | 2011-06-22 | 德州普利森机床有限公司 | Device for processing longhole |
| CN102581617A (en) * | 2012-03-16 | 2012-07-18 | 德州普利森机床有限公司 | Deep hole machining cutter |
| CN202591649U (en) * | 2012-04-16 | 2012-12-12 | 上海东方泵业(集团)有限公司 | Vibration damping boring bar |
| CN102717121A (en) * | 2012-06-25 | 2012-10-10 | 中北大学 | Deep hole machine tool suitable for tapered deep hole boring |
| CN103934487A (en) * | 2014-04-23 | 2014-07-23 | 哈尔滨汽轮机厂有限责任公司 | Boring tool used for machining deep holes of turbine sleeves and deep hole machining method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107135695A (en) * | 2017-06-13 | 2017-09-08 | 泸县立石镇金华家庭农场 | Remove the instrument of weeds of the stirring on tillage tool bit |
| CN108672764A (en) * | 2018-07-16 | 2018-10-19 | 河南理工大学 | The adaptive brace type borer of the processing abdomen formula deep hole of cutter expandable |
| CN113453829A (en) * | 2019-01-15 | 2021-09-28 | 博泰克精密钻孔技术有限公司 | Drill bit and method for reaming blind holes |
| CN113453829B (en) * | 2019-01-15 | 2024-06-07 | 博泰克精密钻孔技术有限公司 | Drill bit and method for reaming blind holes |
| CN109848453A (en) * | 2019-02-18 | 2019-06-07 | 宝鸡同盈稀有金属有限公司 | A kind of lever structure and the target method for machining bore using the lever structure |
| CN109692981A (en) * | 2019-03-04 | 2019-04-30 | 李吴军 | A kind of Counterboring apparatus of machine workpieces blind hole |
| CN109940183A (en) * | 2019-04-12 | 2019-06-28 | 德阳万源旭鸿机电科技发展有限公司 | A kind of high-strength composite vibration damping knife bar |
| CN109940183B (en) * | 2019-04-12 | 2020-08-04 | 德阳万源旭鸿机电科技发展有限公司 | High-strength composite damping cutter bar |
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